Safety spring barrel applicable to locks or any key-locking system



MQMM

July ll 1924b.

P. G. CAILLOIS SAFETY SPRING BARREL APPLICABLE TO LOCKS OR ANY KEYLOCKING SYSTEM Filed Jan. 4.- 1923 MW 246 545 M7 PIERRE GUST AVECAILLOIS, OF PARIS, FRANCE.

SAFETY srnine BARREL APPLICABLE ro LOCKS on ANY KnY- ooKIive svs'rrnn.

" hpplicationnled January 4, 1923-. Serial no. 610,680.

To all whom it may concern:

Beit known that I, PLERRE GUsrAvn GAIL- Lois, a citizen of the FrenchRepublic, residing at 12 Avenue Victor Hugo, Paris, France, haveinvented certain new and useful Improvements in a Safety Spring BarrelApplicable to Locks or Any Key-Lock,

ing, System, of which, the following is a specification.- p p Thepresent. invention relates to a safety spring barrel, applicable tolooks; or keylocking systems of any type.

This device is characterized by dom ofthepartswhen the spring'is at.rest and the complete locking ofthese parts as soon as the inserted keypushes the central memberarranged in the axis of the barrel andone ofthe ends of which engages with the .inechanism of the locks. Thiscentral member is connected to bolt-bars radially arranged andlongitudinally guided .in the grooves of a rotating ring, by means ofballs which combine, on the one hand, with inclines of suitable profileprovided in the bolt-barsuand, ion the other hand, with grooveszorrecesses. provided in the shank of the key the translation of whichwiththe central member it actuates according to the axis ofthe barrel,determines, owing. to the respective. profiles of the inclines, to thedepth of. the grooves or recesses and to the diameter ofthe balls,unegualmovements, of the balls, for eachv of the bolt-bars broughtsimultaneously in final position for which the central member whichengages with the mechanism of the lock can be angularly disp a i Theunequal movements of the balls dis placedfor one and the samelongitudinal translation of the central member of the 1 barrelyaredetermined by the respective profiles ofthe inclines provided in thebolt-bars, the diameter of the balls and the depth 01 the grooves. Therelative positions of these various elements and their respective shapesor dimensions constituting a number of variables. permitting the puttingon the market an unlimited number of safety barrels without any one keybeing able to operate two combinations. K

The'accompanying. drawing illustrates, by wayof example, a form ofconstruction of a safety barrel made in accordance with the presentinvention.

Fig.1 is a horizontal section of the barrel. according to a: planecontaining its lon'g1- the freetudinal axis; all the safety membersbeing in I locking position.

Fig.2 is a view similar to the. I

one, but in the case where the ,safetymem L here are in unlockingposition.

All the parts of th-esafety mechanism are enclosed within the hollowbody 1 which is secured by its base 2 on the caseof the lock ,,f

fin any, suitable manner- The. key; pipe 3"is formed of a cylindricalmember guided at its) upper end in a central bearing in the top and atits other end in a bearing provided at l v the center of a cover late 5centeredinthe,

inner bearing of the ange 6 and secured as well as the crown 7 on thebase 2, bymeans of screws or preferably of rivets. The,

crown 7 is provided at its inner end with" a seat 8. on which bears acompression spring 9 the other end of whichjacts.

on the upper seat of a ring 10. In the?- radial grooves of this ring arearranged lllllS-z. trated,"the ring 10 and the central member; 3 formasingle part and the safety device bolt-bars 11. In. the example.

has only two diametrically opposed boltbars. The compression springs .12act between the lower face of notches l provided in the bars 11 and theseat 14 on the member .3 which forms the hub of the ring. The barsclines v17 provided at various pointsof the bars 11. The operating key18 engages in o the central bore of the member 3 and a square part 18 ofits end entering in the mortice 19 causes the key and ring to rotatetogether.

The depth of the grooves formed on the shank of the key opposite theballs 15 de termines the extreme positionof the balls relatively to thelongitudinaleaxis of-the barrel. If the key 18 is acted upon fordisplacing the ring in translation in the direc tion of the arrow (Fig.2), the balls 15 slideon the inclines 17 until the position of.

their point of contact with these latter is such that these balls arewedged betweenthe incline and the groove provided inthe key;

in this position, the bar and the ring are integral. as far as thetranslation is concerned.

It will be understood that according ,to the' profile of the inclines,the/diameterof the T balls, the, depth", of, thegrooves; of the key, andthe distance separating the balls on-"the length of this key, the barshave for one and the same translation, of, the ring, their owntranslations which are different, not only in value, but the origins ofwhich are displaced in the time. I These respective translations of thebars are "determined so' that, the endQO ,being at the end of its strokeand engaging with the mechanism of the l ock,the notches 21 of the barsareoppos ethes at Q2JasS d n he tire'blockconstitutedfby the partswithin the body l can then be subjected to the 'an-- gularplacemenrwhicu actuates the mechanis' ofith'e' lock. ",Wlien the ringmoves tab-kw its initial position, the springs 9 and "12ffactfor,{br'ingin back the mechanism of the spiingldevice 1n theposition shown in Fig'i-lf I" I What Iclaim as inyinvention and desiretofsecuieflby Letters Patent is:

n. r, ca l' itl blefif receiving"longitudinal and ani a displacem ntsabout itsfaxis and new: ing a central bore for receiving ajkeythereballintoj the barrel,nieans on the key for a-ngu larlyidis'placing said keype, a pluralityor' balls, the of the key p1pe having orificesjfthereiniserving 'asyhous'ings for the s'" "andf me'ans" for'independently'pushing Whe" the lat ter 'isi longitudinally displaced.

astray" pipe mt-o thebar'rel, aiectangular for causing the bars torotate toto v 4 2-4 ,In' a safety spring valve for locks, 21-

key -.pipe, springs interposed between the key pipe rotatablyj andlongitudinally slidabl; in the valve andhaying l'a central boreandafreeess' therein for receivinga key to permit o f th'e. pushin backofthe key pipe into the barrel, 'a rectangular extension on "the"keyengageable' in fthe recefss for 'facili-i' tatin g the rotation ofthe key pipe, the 'yvalls of "the "key" pipe having orifices "therein, a

pluralityof' balls housed in-the orifices of saidkeypipe, a, plurality,of longitudinal "bar's "provided with inclinedpo rtions 'f'o'rj 00operating vvith' the balls, a ring capable of sliding in the barrel andprovided with a Ina safety springlbarrel for locks, the 'eni lt' thebarrel of a key "pipe "21" n3; safety springtarrel' for locks, akeyfpipeqrotatably andslidably mounted in thefbariel and havinga centralbore and a rectan'gularfrecess forrec'eiving a notched key; therein topermit 'ofth pushing baekjof annular ledge fixed in theba'r-r'el an,seriesof longitudinal greoves for guiding "the bars, the bars beingmovable independently of each other, a flange on the key pipe, resilientmeans interposed between the bars and the flange on the key pipe, andmeans for disengagingv the. bars in order, to rotate the key pipe andthe ring.

4. In a safety spring barrel for locks, the arrangement in the barrel ofa key pipe capable of receiving longitudinal and angular displacements"about its axis and provided with 'a i'ec'essfor receiving a notched keyto permit of the pushing back of the key pipe into the'bar'rel,a"rectangular extension on the key engaged in the recess for eifectingrotation" of: the key pipe,the wall of th'ejkey pipe being provided withorifices, a plurality of balls housed in the orifices and cooperatingWith the notched key, a plurality of longitudinal bar's provided withinclined 'portions for cooperating with the balls, a ring capable ofsliding in the barreland provided with longitudinal grooves for guidingthe bars, the bars being movable independently of each other, a -flangeon the key pipe,

springs interposed between the lower endsof the bars and the flange onthe key pipe,

'an annular'ledge on the barrel provided with grooves to permit ofth'e'longitudinal'displacementof the bars, and'ithe bars beingprovided withopenings for cooperating with said ledge, substantially as and the purcposes setforth. thefballsaeward'theaxis of" the key] pipe 5JIn a safetyspring barrel for locks, the

arrangemen t-in-the' barrel of a key "pi ecapable "of receivinglongitudinal displacements and angular displacementsabout its axisprovided with a central bore and a recess, a notc'hed key having arectangularextension fitting 111 the bore and'eng'a'g'ing the recess forsliding the key pipe 'inwardlyand for vrotating the, same, the walls' ofthekey pipe being provided with" orifices, "balls housedin said orificesforcooper'atingwith .tlie notched'k'ey, 'a plurality o'f longitudinalbars provided with inclined portions for'cooperating with the balls,ar'ing capable of sliding in the barrel and provided withlongitudinalgrooves for ensuring of the'guiding of the'bars, the barsbeing movableindependently of'each' other, a flange onjtheresilientineans interposed between the ring andthe annular ledge;

6. In a safety spring barrel for locks, the arrangement of the barrel ofa key pipe capable' of receiving longitudinal displace ments and angulardisplacements about its axis and provided with a central bore and arecess, a notched key insertable in the bore of the key pipe and havinga rectangular extension engaging the recess to facilitate the inwardsliding and rotation of the key pipe, the walls of the key pipe beingprovided with orifices, a plurality of balls housed by said orifices, aring capable of sliding in the barrel and provided with a plurality. oflongitudinal grooves, a plurality of independently movable longitudinalbars guided by the grooves in the ring and provided with inclinedportions for cooperating with the balls, a flange on the key pipe,springs interposedbetween the lower ends of the bars and the flange, anannular ledge fixed in the barrel and provided with grooves for guidingthe bars, the bars being also provided with notches for straddling theledge for determining the longitudinal displacements of the barsdepending on the depth of the notches of the key and on the relativepositions of said notches so that the engagement of'any notches of thebars with the said annular ledge permits the turning of the ring and keypipe about their common axis for actuatingthe lock.

In testimony whereof I have signed my name to this specification.

PIERRE GUSTAVE CAILLOIS.

